import axios from 'axios'
import { Notification, MessageBox, Message, Loading } from 'element-ui'
import store from '@/store'
import { getToken } from '@/utils/auth'
import { saveAs } from 'file-saver'
import { tansParams, blobValidate } from '@/utils/ruoyi'

// 是否显示重新登录
export let isRelogin = { show: false };

axios.defaults.headers['Content-Type'] = 'application/json;charset=utf-8'
// 创建axios实例
const service = axios.create({
  // axios中请求配置有baseURL选项，表示请求URL公共部分
  baseURL: process.env.VUE_APP_BASE_API,
  // 超时
  // timeout: 10000
  timeout: 10000000
})
// request拦截器
service.interceptors.request.use(
  config => {
    if (getToken()&&getToken()!="undefined") {
      config.headers['Authorization'] = 'Bearer ' + getToken() // 让每个请求携带自定义token 请根据实际情况自行修改
    }
    return config
  },
  error => {
    console.log(error)
    Promise.reject(error)
  }
)

// 响应拦截器
service.interceptors.response.use(res => {
    const code = res.data.code
    const msg = res.data.msg
    // 二进制数据则直接返回
    if(res.request.responseType ===  'blob' || res.request.responseType ===  'arraybuffer'){
      return Promise.resolve(res.data)
    }
    if (code == 401) {
      if (!isRelogin.show) {
        isRelogin.show = true;
        MessageBox.confirm('登录状态已过期，您可以继续留在该页面，或者重新登录', '系统提示', {
            confirmButtonText: '重新登录',
            cancelButtonText: '取消',
            type: 'warning'
          }
        ).then(() => {
          isRelogin.show = false;
            store.dispatch('LogOut').then(() => {
            location.reload()
          })
        }).catch(() => {
          isRelogin.show = false;
        });
      }
      return Promise.reject('无效的会话，或者会话已过期，请重新登录。')
    } else if (code == 500) {
      Message({
        message: msg,
        type: 'error'
      })
      return Promise.reject(new Error(msg))
    } else if (code != 200) {
      Notification.error({title: msg})
      return Promise.reject('error')
    } else {
      return Promise.resolve(res.data)
    }
  },
  error => {
    console.log('err' + error)
    Message({
      message: error,
      type: 'error',
      duration: 5 * 1000
    })
    return Promise.reject(error)
  }
)
// 下载loading标识
let downloadLoadingInstance;
// 通用下载方法
export function download(url, params, filename) {
  downloadLoadingInstance = Loading.service({ text: "正在下载数据，请稍候", background: "rgba(0, 0, 0, 0.7)", })
  return service.post(url, params, {
    transformRequest: [(params) => { return tansParams(params) }],
    headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
    responseType: 'blob'
  }).then(async (data) => {
    const isLogin = await blobValidate(data);
    if (isLogin) {
      const blob = new Blob([data])
      saveAs(blob, filename)
    } else {
      const resText = await data.text();
      const rspObj = JSON.parse(resText);
      const errMsg = errorCode[rspObj.code] || rspObj.msg || errorCode['default']
      Message({
        message: errMsg,
        type: 'error',
        duration: 5 * 1000
      })
    }
    downloadLoadingInstance.close();
  }).catch((r) => {
    console.error(r)
    Message({
      message: '下载文件出现错误，请联系管理员！',
      type: 'error',
      duration: 5 * 1000
    })
    downloadLoadingInstance.close();
  })
}

export default service
